Glossary terms beginning with D

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Daddy long legs
a term used to describe a type of fly, a harvestman or a spider depending on where you live in the world.
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cf. Odonata - the Odonata (or dragonflies and damselflies) are an Order of insects. They have large, membranous wings and the larvae are usually aquatic predators.
Darkling beetle
a species of beetle that is dark in colour and less than 2cm in length when adult. The larvae of the beetle are called mealworms and are captive bred for use as live food.
Read more on: Darkling beetle
the term used to describe the process of evolution through natural selection.
Read more on: Darwinism
Dengue fever
a disease, caused by the Dengue virus, transmitted to humans by mosquitoes.
Read more on: Dengue fever
Dermaptera (or earwigs) are an Order of insects. The abdomen ends in characteristic pincers called cerci.
Read more on: Dermaptera
a family of beetles often known as carpet beetles or larder beetles.
Read more on: Dermestidae
detritivores are animals whose diet is primarily composed of decaying organic matter.
Read more on: Detritivore
the arrested development of an organism. Diapause is often the result of environmental conditions.
Read more on: Diapause
Dichotomous key
a method used to help identify an organism.
Read more on: Dichotomous key
the presence of two different forms of an organism in a population.
Read more on: Dimorphism
the Diplopoda are a group of arthropods more commonly known as millipedes.
Read more on: Diplopoda
the Diplura/two-pronged bristletails are one of the three non-insect hexapod classes of invertebrates.
Read more on: Diplura
the Diptera/true flies are an Order of insects. Characteristically they have one pair of wings, the hind wings being reduced to balance organs called halteres.
Read more on: Diptera
Direct flight muscles
direct flight muscles are muscles connected to the wing of an insect.
Read more on: Direct flight muscles
Discal cell
a cell in the wing of some insects.
Read more on: Discal cell
the part of an appendage (leg, wing, antenna etc) that is farthest from the body.
Read more on: Distal
diurnal animals are those that are active during the day.
Read more on: Diurnal
cf. Megaloptera - the Order Megaloptera are primitive insects. The Order contains about 300 species. Insects in the Order are known by a variety of names including Alderflies, Dobsonflies and Fishflies.
structures produced by plants for arthropods that they have a symbiotic relationship with. These structures usually provide the arthropods with shelter.
Read more on: Domatia
cf. Myrmeleontidae - the Myrmeleontidae are a Family of Neuroptera commonly called Antlions. The adults superficially resemble dragonflies. The larvae are well-known for their predatory habit.
the upper surface of an organism.
Read more on: Dorsal
cf. Odonata - the Odonata (or dragonflies and damselflies) are an Order of insects. They have large, membranous wings and the larvae are usually aquatic predators.
Drawdown zone
A frequently exposed area at the edge of a body of water.
Read more on: Drawdown zone
the name given to male bees.
Read more on: Drone
Dry fly
cf. Cicada - insects in the Order Hemiptera. They are best known for their long life cycles and loud song.
cf. Rhinoceros beetle - a subfamily of Scarab beetles. Rhinoceros beetles are some of the largest of the beetles. The males have characteristic horns.

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